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Set processor features in the shared user page.

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This fixes bug #387.

svn path=/trunk/; revision=11410
This commit is contained in:
Eric Kohl 2004-10-24 12:00:01 +00:00
parent baac7ae72e
commit f443b5edcf
4 changed files with 59 additions and 9 deletions
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12
reactos/include/napi/shared_data.h
View file

@ -1,6 +1,18 @@
#ifndef __INCLUDE_NAPI_SHARED_DATA_H
#define __INCLUDE_NAPI_SHARED_DATA_H
#define PF_FLOATING_POINT_PRECISION_ERRATA 0
#define PF_FLOATING_POINT_EMULATED 1
#define PF_COMPARE_EXCHANGE_DOUBLE 2
#define PF_MMX_INSTRUCTIONS_AVAILABLE 3
#define PF_PPC_MOVEMEM_64BIT_OK 4
#define PF_ALPHA_BYTE_INSTRUCTIONS 5
#define PF_XMMI_INSTRUCTIONS_AVAILABLE 6
#define PF_3DNOW_INSTRUCTIONS_AVAILABLE 7
#define PF_RDTSC_INSTRUCTION_AVAILABLE 8
#define PF_PAE_ENABLED 9
#define PF_XMMI64_INSTRUCTIONS_AVAILABLE 10
#define PROCESSOR_FEATURES_MAX 64
typedef enum _ALTERNATIVE_ARCHITECTURE_TYPE

9
reactos/ntoskrnl/include/internal/i386/ke.h
View file

@ -75,8 +75,15 @@
#define X86_CR4_PAE 0x00000020 /* enable physical address extensions */
#define X86_CR4_PGE 0x00000080 /* enable global pages */
#define X86_FEATURE_TSC 0x00000010 /* time stamp counters are present */
#define X86_FEATURE_PAE 0x00000040 /* physical address extension is present */
#define X86_FEATURE_CX8 0x00000100 /* CMPXCHG8B instruction present */
#define X86_FEATURE_PGE 0x00002000 /* Page Global Enable */
#define X86_FEATURE_MMX 0x00800000 /* MMX extension present */
#define X86_FEATURE_SSE 0x02000000 /* SSE extension present */
#define X86_FEATURE_SSE2 0x04000000 /* SSE2 extension present */
#define X86_EXT_FEATURE_3DNOW 0x40000000 /* 3DNOW! extension present */
#ifndef __ASM__
@ -160,6 +167,8 @@ VOID
KiGdtPrepareForApplicationProcessorInit(ULONG Id);
VOID
Ki386InitializeLdt(VOID);
VOID
Ki386SetProcessorFeatures(VOID);
ULONG KeAllocateGdtSelector(ULONG Desc[2]);
VOID KeFreeGdtSelector(ULONG Entry);
VOID

24
reactos/ntoskrnl/ke/i386/kernel.c
View file

@ -45,6 +45,7 @@ ULONG Ke386L1CacheSize;
ULONG Ke386L2CacheSize;
BOOLEAN Ke386NoExecute = FALSE;
BOOLEAN Ke386Pae = FALSE;
BOOLEAN Ke386PaeEnabled = FALSE;
/* FUNCTIONS *****************************************************************/
@ -299,6 +300,7 @@ KeInit1(PCHAR CommandLine, PULONG LastKernelAddress)
if ((Pae && (Ke386CpuidFlags & X86_FEATURE_PAE)) || NoExecute)
{
MiEnablePAE((PVOID*)LastKernelAddress);
Ke386PaeEnabled = TRUE;
}
}
@ -345,3 +347,25 @@ KeInit2(VOID)
DPRINT1("Ke386L2CacheSize: %dkB\n", Ke386L2CacheSize);
}
}
VOID INIT_FUNCTION
Ki386SetProcessorFeatures(VOID)
{
SharedUserData->ProcessorFeatures[PF_FLOATING_POINT_PRECISION_ERRATA] = FALSE;
SharedUserData->ProcessorFeatures[PF_FLOATING_POINT_EMULATED] = FALSE;
SharedUserData->ProcessorFeatures[PF_COMPARE_EXCHANGE_DOUBLE] =
(Ke386CpuidFlags & X86_FEATURE_CX8);
SharedUserData->ProcessorFeatures[PF_MMX_INSTRUCTIONS_AVAILABLE] =
(Ke386CpuidFlags & X86_FEATURE_MMX);
SharedUserData->ProcessorFeatures[PF_PPC_MOVEMEM_64BIT_OK] = FALSE;
SharedUserData->ProcessorFeatures[PF_ALPHA_BYTE_INSTRUCTIONS] = FALSE;
SharedUserData->ProcessorFeatures[PF_XMMI_INSTRUCTIONS_AVAILABLE] =
(Ke386CpuidFlags & X86_FEATURE_SSE);
SharedUserData->ProcessorFeatures[PF_3DNOW_INSTRUCTIONS_AVAILABLE] =
(Ke386CpuidExFlags & X86_EXT_FEATURE_3DNOW);
SharedUserData->ProcessorFeatures[PF_RDTSC_INSTRUCTION_AVAILABLE] =
(Ke386CpuidFlags & X86_FEATURE_TSC);
SharedUserData->ProcessorFeatures[PF_PAE_ENABLED] = Ke386PaeEnabled;
SharedUserData->ProcessorFeatures[PF_XMMI64_INSTRUCTIONS_AVAILABLE] =
(Ke386CpuidFlags & X86_FEATURE_SSE2);
}

7
reactos/ntoskrnl/ke/main.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: main.c,v 1.200 2004/10/22 20:30:47 ekohl Exp $
/* $Id: main.c,v 1.201 2004/10/24 12:00:01 ekohl Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/ke/main.c
@ -112,7 +112,12 @@ InitSystemSharedUserPage (PCSZ ParameterLine)
* There is NO need to do this again.
*/
Ki386SetProcessorFeatures();
SharedUserData->NtProductType = NtProductWinNt;
SharedUserData->ProductTypeIsValid = TRUE;
SharedUserData->NtMajorVersion = 5;
SharedUserData->NtMinorVersion = 0;
BootDriveFound = FALSE;